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2 Sheets-Sheet 1.

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T. W. R. MGCABB.

CALENDAR CLOCK MECHANISM.

Patented Nov. 10, 1896.

UNITED STATES PATENT OrEIcE.

THOMAS XV. R. MOCABE, OE \VINSTED, CONNECTICUT, ASSIGNOR TO THE \VILLIAML. GILBERT CLOCK COMPANY, OF SAME PLACE.

CALENDAR=3LK Wl ECHANiSWl.

SPECIFICATION forming part of Letters Patent No. 571,198, dated November10, 1896.

Application filed April 15, 1896. Serial No. 587,718. (NO 1110461,)

T all whom it may concern.-

Be it known that LTHOMAS V. R. MCCABE, a citizen of the United States ofAmerica, residing at \Vinsted, in the county of Litchiield and State ofConnecticut, have invented a certain new and useful Improvement in Calendar- Clock Mechanisms, of which the following is a description,reference being had to the accompanying drawings, wherein Figure 1 is afront or face view of the works of a clock embodying said improvement.Fig. 2 is a detail setional view. The plane of the section is denoted bythe dotted line a men Fig. 1. The section extends from the frontbackward far enough to include the count-wheel. Fig. 3 is a front faceview of the count-wheel. Fig. 4 is a rear face view of a small disk nextin front of the count-wheel, carrying a pawl which cooperates with thepawl-stops carried by the countwheel. Fig. 5 is aview showing the camand its lever in a vertical section at right angles to the verticalsection shown in Fig. 2.

The improvement pertains to the mechanism of calendar-clocks.

One of the objects of the improvement is to permit the calendarmechanism to be set by the rotation of an index-finger journaled on thesame shaft with the hands of the clock.

Another object of the improvement is to permit the calendar mechanism tobe manually set so that the calendar mechanism will make its dailychange at the desired time, generally midnight, although the clock mayhave run down or stopped at any hour and minute of the twenty-fourhours.

Other objects will appear incidentally in the description of theconstruction and operation of the improvement.

In the accompanying drawings, the letter (t denotes the frame of theworks of a clock. The time mechanism is, as usual, at the right-in themain-of the shaft that carries the hands, and the striking mechanism is,as usual, at the left-in the main-of that shaft.

The letter 1) denotes the rotary disk that is known as the count-wheel,which rotates only during the operation of striking, and it makes acomplete rotation only once in twenty-four hours. This count-wheelcarries with it as it rotates two pawl-stops c,

which are located on opposite sides of the axis on which they rotate.

The letter (1 denotes a rotary disk carrying a spring-pressed pawl 6,adapted to cooperate with the pawl-stops 0. Either of these steps comingagainst the free end of the pawl will cause the disk (I to rotate withthe countwheel, but when that count-wheel is rotated in the oppositedirection the free end of the pawl. rides over these stops upon comingin contact therewith. The disk (1 is fast to a sleeve (1, journaled onthe shaft f of the spring which drives the striking mechanism.

The letter 9 denotes a rotary cam, which, through the medium of sleeve 9and screws is made to rotate with the sleeve (1, disk (I, and pawl c.

The letter 72/ denotes the calendar-operating lever, having a smallfriction-roller on the side thereof resting on the periphery of therotary cam g. All the proper time the cam g raises this lever,and whenit drops off the edge of the spur on the cam it effects the change ofthe calendar, the mechanism for effecting that change being (or it maybe) the ordinary mechanism.

The sleeve (1 carries the gear t as well as the rotary cam g. Thisgearc' meshes into a gear 7;, which is journaled on the same shaft withthe hands of the clock. The let-terldenotes an index fast, for the timebeing, to a sleeve projecting forward from the gear 7t, so that thisindex and the gear 7c rotate together. By rotating this index Z the disk(Z, carrying the pawl e, is correspondingly rotated, and this is done inthe setting of the calendar mechanism.

It will be readily understood from this description that the setting ofthe calendar mechanism can be effected by the proper rotation of theindex journaled upon the same shaft which carries the hands of theclock. It is also a fact that by means of the mechanism described thecalendar mechanism can be manually set to make the change in thecalendar at any desired and specific minute and hour, whether the clockbe running or not, no matter at what time the clock may have stopped orrun down.

This device can be arranged on the time or strike side of movement,preferably the strike ing'.

side, as all resistance is taken from the tim- The device is alsoapplicable to change other devices than calendar, such as figures ofvarious kinds.

The device is not limited to two pins, as, for instance, if theeountwheel made two or more revolutions in twenty four hours it would berequired to have an extra gear, so that the click-disk will be carriedthe required number of revolutions desired to obtain desired movement offigures at the period required.

I claim as my improvement 1. In combination, the striking mechanism ofthe clock, ii'icluding the count-wheel Z) carrying pawl-stops e c, thepawl e cooperating with said stops, the calendar-operating lever h, andthe rotary cam 9 connected to pawl 6, all substantially as described andfor the purpose s t forth.

9. In combination, the striking mechanism of the clock, including thecount-wheel b carrying the two pawl-stops c c on opposite sides of theaxis, the pawl e cooperating with the said stops,the calendar-operating;lever 71, and the rotary cam g connected to pawl c, all. substantiallyas described and for the purposes set forth.

In combination, the striking mechanism of the clock, including thecount-wheel Z1 carrying the two pawl-stops on opposite sides of theaxis, the pawl e cooperating with the said stops, the time mechanism ofthe clock, the index Z journaled on the same axis as the clock-hands,the gear 71; adapted to rotate with such index, the gear 1', thecalendar-operating" lever 7i, and the rotary cam 5 connected to the pawlc, all substantially as described and for the purposes set forth.

TIIOS. V. R. MCCABE.

lYitnesses:

GEO. B. Woonnnrr,

JAMES G. OODRL'FF.

